have solved something like that. >> reporter: the nra wants to improve the current system and enforce laws on the books. members of congress are in their home districts for two weeks, plenty of time to hear from constituents. >> back to the key pro vision left out of the bill, the assault weapons ban. any chance it will gate vote by hit itself? >> reporter: there is chance. they feared including it might kill the broader package of reforms, including the background checks. senate leaders said last week, it will get an up-or-down vote as an amendment. >>> also in washington, hundreds of people are already lined up outside the supreme court in order the get a seat for tomorrow's historic arguments. at issue is california's prop 8, which bans gay marriage. a second case set for wednesday involves part of the federal defense of marriage act that prevents same-sex couple who is are legally married from getting a range of federal benefits. >>> secretary of state john kerry issued a warning for iraqi leaders. the u.s. wants iraq to stop letting their air space be used for sup plies for syria. >>>